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In a binary tree, what is the in-order traversal of the tree with nodes A, B, C,

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Question: In a binary tree, what is the in-order traversal of the tree with nodes A, B, C, D arranged as follows: A is the root, B is the left child of A, and C is the right child of A, with D as the left child of C?

Options:

  1. A, B, C, D
  2. B, A, D, C
  3. B, A, C, D
  4. B, D, A, C

Correct Answer: B, A, C, D

Solution: 

The in-order traversal visits the left subtree, then the root, and then the right subtree, resulting in B, A, C, D.

In a binary tree, what is the in-order traversal of the tree with nodes A, B, C,

Practice Questions

Q1
In a binary tree, what is the in-order traversal of the tree with nodes A, B, C, D arranged as follows: A is the root, B is the left child of A, and C is the right child of A, with D as the left child of C?
  1. A, B, C, D
  2. B, A, D, C
  3. B, A, C, D
  4. B, D, A, C

Questions & Step-by-Step Solutions

In a binary tree, what is the in-order traversal of the tree with nodes A, B, C, D arranged as follows: A is the root, B is the left child of A, and C is the right child of A, with D as the left child of C?
  • Step 1: Identify the structure of the binary tree. The tree has A as the root, B as the left child of A, C as the right child of A, and D as the left child of C.
  • Step 2: Start the in-order traversal. In in-order traversal, we first visit the left subtree.
  • Step 3: The left child of A is B. Visit B first.
  • Step 4: After visiting B, we go back to the root, which is A. Visit A next.
  • Step 5: Now, we move to the right subtree of A, which is C. Visit C.
  • Step 6: C has a left child, which is D. Before finishing with C, we visit D.
  • Step 7: After visiting D, we finish with C. The order of visitation is B, A, C, D.
  • Binary Tree Structure – Understanding the arrangement of nodes in a binary tree and their relationships.
  • In-Order Traversal – The method of traversing a binary tree by visiting the left subtree, the root, and then the right subtree.
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